Gripe when using non-raw block device #594
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If the S_IFBLK instance of a block device is used, rather than the S_IFCHR raw instance, flush operations can be very expensive as the OS is forced to walk the page cache looking for necessary work. While we will not strictly forbid the operator from choosing to use such a device, we can at least admonish their choice in the logs. Fixes oxidecomputer#518
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If the S_IFBLK instance of a block device is used, rather than the S_IFCHR raw instance, flush operations can be very expensive as the OS is forced to walk the page cache looking for necessary work.
While we will not strictly forbid the operator from choosing to use such a device, we can at least admonish their choice in the logs.
Fixes #518